Title:Chiral Analysis Based on Vortex Beams
Speaker:Professor Zhen Shuju(Professor at Southwest University)
Time:June 9,2025(Monday)2:30 PM–5:00 PM
Venue:Room 214,Building 16,School of Chemistry and Chemical Engineering
Inviter:Professor Liu Jinbin
Organizing Unit:School of Chemistry and Chemical Engineering
Speaker Profile:
Professor Zhen Shuju is a professor and doctoral supervisor at the School of Chemistry and Chemical Engineering,Southwest University.She is a recipient of the National Excellent Youth Science Fund and an academic and technical leader in Chongqing.She obtained her Bachelor's degree in Environmental Science from Southwest University in 2006 and her Ph.D.in Analytical Chemistry from the same university in 2011.She has been a faculty member at Southwest University since 2011 and visited the University of Texas at Austin from December 2013 to December 2014.Her research focuses on spectroscopic analysis.To date,she has published more than 70 academic papers as the first or corresponding author in journals such asAngew.Chem.Int.Ed.,Adv.Funct.Mater.,Anal.Chem.,andSmall.She has been granted four national invention patents and has led 12 projects,including the National Excellent Youth Science Fund,National Natural Science Foundation of China general projects,youth fund,sub-projects of the National Key Research and Development Program,and Chongqing Natural Science Foundation general projects.
Abstract:
Vortex beams are a type of special chiral light beams with phase singularities,helical wavefront structures,and doughnut-shaped intensity profiles.Unlike circularly polarized light,which carries spin angular momentum(SAM),vortex beams carry orbital angular momentum(OAM).Because the topological charge of vortex beams can be any integer,the OAM they carry has an infinite number of possible values,offering a wide degree of freedom and enhancing their interaction with chiral materials.Based on this,our research group has carried out the following work:First,using vortex beams as a chiral induction source,we successfully prepared chiral assemblies of porphyrin molecules and chiral Co-MOFs,which are expected to be used in asymmetric catalysis,chiral separation,and enantiomer recognition.Second,we found that vortex beams can induce a novel aggregation-into-ring effect in noble metal nanoparticles,which has been successfully applied to distinguish chiral nanoparticles with the same morphology.Third,we constructed a novel optical rotation detector using vortex beams to achieve highly sensitive detection of chiral substances in complex samples.